Absorption of the $ω$ and $φ$ Mesons in Nuclei

Details Absorption of the $ω$ and $φ$ Mesons in Nuclei Absorption of the $ω$ and $φ$ Mesons in Nuclei

2010-06-17

arxiv.org/abs/1006.3361v1

Physics

Nuclear Physics

Nuclear Experiment

6 pages, 4 figures

Scientific paper

Due to their long lifetimes, the $\omega$ and $\phi$ mesons are the ideal candidates for the study of possible modifications of the in-medium meson-nucleon interaction through their absorption inside the nucleus. During the E01-112 experiment at the Thomas Jefferson National Accelerator Facility, the mesons were photoproduced from $^{2}$H, C, Ti, Fe, and Pb targets. This paper reports the first measurement of the ratio of nuclear transparencies for the $e^{+}e^{-}$ channel. The ratios indicate larger in-medium widths compared with what have been reported in other reaction channels.

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